Abstract
We report the observation of a narrow state decaying into and produced in of collisions at in the CDF II experiment. We observe decays. The mass is measured to be , with an observed width consistent with the detector resolution. This is in agreement with the recent observation by the Belle Collaboration of the meson.
- Received 4 December 2003
DOI:https://doi.org/10.1103/PhysRevLett.93.072001
©2004 American Physical Society